Gasoline dispensing pump control



Sept. 28, 1937. DEVERS 2,094,003

GASOLINE DISPENSING PUMP CONTROL Filed May 15, 1956 2 Sheets-Sheet lSept. 28, 1937. c. DEVERS 2,094,003

GASOLINE DISPENSING PUMP CONTROL Filed May 15, 1956 2 Sheets-Sheet 2ummy! M fi 2 3'/// I M /4 A3. /0

.2 7. L19 3mm Patented Sept. 28, 1937 UNITED STATES PATENT OFFICE Thisinvention has reference to dispensing pumps designed for dispensinggasoline, the primary object of the invention being to provide novelmeans for controlling the operation of the 55 usual Valve of thedispensing nozzle of the pump,

whereby predetermined quantities :of gasoline may be dispensedautomatically.

An important object of the invention is to provide a device of thischaracter which maybe employed in garages or filling stations whereinbuses, trucks or the like vehicles using large quantities of gasoline,are supplied with gasoline, the device rendering it unnecessary for anattendant to watch the dispensing operation to cut off the flow ofgasoline through the nozzle at a predetermined interval.

With the foregoing and other objects in view, which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, may be made within thescope of what is claimed, without departing from the spirit of theinvention.

Referring to the drawings:

Figure l. is an elevational view of a gasoline dispensing pumpconstructed in accordance with the invention.

Figure 2 is a diagrammatic view illustrating the circuits and means forcontrolling the circuits to the automatic cut off.

Figure 3 is a sectional view through the control cylinder used inconnection with the filling nozzle of the pump.

Figure 4 is a plan view illustrating the magnetic coils and valveoperating armature thereof.

Figure 5 is a longitudinal sectional view through the housing in whichthe coils and armature are mounted.

Figure 6 is a transverse sectional View through the housing.

Figure 7 is a sectional view through a threeway valve, forming a part ofthe invention.

Referring to the drawings in detail, the reference character 5designates a gasoline dispensing pump of the usual and well knownvisible dispensing type, which is provided with the usual dispensinghose 6, and filling nozzle 1.

The reference character 8 designates the valve box or housing in whichthe magnetic coils 9 and 9' are mounted, the coils 9-and 9' having theiradjacent inner ends spaced apart as clearly shown by Figure 4 of thedrawings. The armature forming a part of the electric operating means,is indicated by the reference character I0 and operates in the adjacentends of the coils Sand 9. Connected with the armature I0, is a bar IIwhich has its ends positioned in openings 7 formed in the plates I2,which plates are pivotally mounted on the bars I3 that rise from thebottom of the housing 8.

These plates i2 are substantially U-shaped and have openings to receivethe ends H! of the valve operating arms l5, that operate the three wayvalvesv I6 shown by Figure 7 of the drawings, with the result that asthe armature I0 moves, these plates and valves will movecorrespondingly, opening or closing the valves, to control the passageof air therethrough.

The valves control the passage of air through the hose I1 and I8.respectively, the hose l1 leading to the bottom of the cylinder I8mounted on the filling nozzle, while the hose I8, connects with theopposite end of the cylinder I9, as shown by Figure 3.

Operating within the cylinder I9, is a piston 20 that carries the valvecontrol pin 2|, the valve control pin operating through one end of thecylinder I9, where it may contact with the pin 22 of the valve 24 thatcontrols the passage of gasoline through the nozzle.

Thus it will be seen that when air passes through the hose H, the airwill contact with the piston 20 moving it upwardly and consequentlymoving the valve of the filling nozzle, to its open position. When airin the hose IT is exhausted, and air is admitted to the cylinder I9,through the hose [8, the piston 20 will be returned to its normalinactive position at the bottom of the cylinder I9, allowing the fillingnozzle valve to automatically return to its inoperative position,whereupon the flow of gasoline through the nozzle is stopped. Thereference character 24 designates an insulating ring adapted to bemounted on the dial of the dispensing pump, the insulating ring 24 beingprovided with pairs of contact fingers 25 disposed opposite to theindicia formed on the dial to indicate the number of gallons dispensed.These contact fingers are of such lengths that they lie in the path oftravel of the hand 26 that rotates over the dial to indicate the numberof gallons dispensed.

These contact fingers 25 are in circuit with the sockets 25, through thewires 28, there being provided a socket and circuit for each indiciaappearing on the pump dial.

The power line is indicated by the reference character 29, the coils 9and 9' being in circuit with the power line 29 through the wires 30 and3| respectively. Connected in the circuit with the wires 30 and 2| areresistance coils 32 and 33 respectively, the coil 32 being connectedwith the wire 34 that is in circuit with the coil 9, while the wire 42provides a circuit between the coil 33 and coil 9. Wire 35 provides acircuit between the coil 9 and wire 36, which constitutes the negativewire of the power circuit. On one end of the wire 42, is a plug 31adapted to be plugged into any one of the sockets 25, placing the socketin circuit with the coil 9.

The reference character 38 indicates a wire leading from the negativewire 36 and connects with the contact point 39 of the switch 40. Coil 9'is in circuit with the wire 36, through the wire 45. As clearly shown bythe drawings, one of the contact fingers 25 of each pair of fingers,connects with the contact ring 46 mounted on the insulating ring 24, thecontact ring 40 being in circuit with the wire 36, through the wire 41.

The operation of the device is as follows:

In the diagram, both coils 9 and 9 are energized in a parallel circuit,under normal conditions, and when it is desired to dispense a givenquantity of gasoline, as for example five gallons, the plug 31 isinserted in the socket 25' which is in circuit with the contact fingers25 disposed opposite to the number 5 on the pump dial. The

switch member 40 is now moved to complete a circuit through the contactmembers 39 and 44,

and since the coils 9 and 9 are normally energized in a parallelcircuit, it will be seen that the coil 9 will be shorted, and dischargedthrough the coil 32. The armature ID will now move into coil 9', movingthe valve member l6 into a position allowing air to pass to the cylinder[9, and moving the piston 20 upwardly, operating the valve 23, to theend that gasoline may pass through the filling nozzle.

As the hand 26 rotates indicating the number of gallons of gasolinebeing dispensed, the hand wipes the contact fingers 25, and when thehand 26 moves the contact fingers opposite to the numeral 5 of the dialinto engagement with each other, the circuit to the coil 9 is shorted,and

discharged through resistance coil 33, whereupon the valve l6 moves toshut off the flow of gasoline through the nozzle.

The three Way valves l6 are so designed that in one position of thearmature [0, one of these valves allows air to pass from an air supplytank, to the cylinder I 9, admitting air at the bottom thereof, theother valve I5 acting to shut off the supply of air from the air supplytank to the top of the cylinder [9 exhausting air pressure that was inthe cylinder l9 against the top of the piston, to the atmosphere.

i Upon the reverse movement of the armature Ill air enters the cylinder[9 at the top thereof, moving the piston 20 to its normal inactiveposition.

I claim:. p

1. The combination with the dial indicating hand and nozzle valve of agasoline filling pump, of a valve operating device comprisingpneumatically controlled means including a valve, electrical meansoperating the latter valve, and controlled by the action of the dialindicating hand, a selective master switch controlling the operation ofthe dial indicating hand, and means for completing a circuit between theselective master switch and electrical means operating the secondmentioned valve, whereby the valve and nozzle may be operated to cut ofithe flow of liquid through the nozzle at predetermined intervals.

2. The combination with the dial indicating hand and filling nozzlevalve of a gasoline filling pump, of a valve controlling devicecomprising an air operated piston, electrical means operating the lattervalve and including contact members on the dial, the contact membersbeing controlled by the action of the dial indicating hand, a selectivemaster switch, wires providing a circuit between the electrical valveoperating means, wires providing an electrical circuit between theselective master switch, contact members and electrical operating means,whereby the valve controlling device may be operated at predeterminedintervals dispensing a predetermined quantity of gasoline.

CHARLES DEVERS.

